In this sense, we call them qubit threads and construct a holographic qubit threads model as an attempt of the new toy models of holographic principle, in which these qubit threads can also be understood as playing the role of CMI (conditional mutual information) threads. We explicitly show the connection between this model and the holographic tensor network models. In particular, we show how to understand the concept of “disentanglers” in the latter from the perspective of qubit threads. The relationship with the holographic kinematic space is also studied, that is, the flux of a thread bundle connecting two elementary regions can exactly match the volume of a corresponding diamond region bounded by light rays in the kinematic space. Then thread/state correspondence naturally endows the kinematic space with the interpretation of microscopic states such that to explain that the entropy is proportional to volume therein. Finally, we show that our holographic qubit threads model can in some sense quantitatively characterize the famous “It from qubit” thought experiment [1]}, that is, by removing the entanglement in the boundary quantum system, the bulk spacetime will accordingly deform, or even break up.
